Sewing machine



July 18, 1939. A F A 2,166,760

SEWING MACHINE Filed March 9, 1938 3 Sheets-Sheet 1 01113 if u/ma m/ BY46m A ORNEY July 18, 1939. L. KAUFMAN 2,166,760

SEWING MACHINE Filed March 9, 1938 3 SheetsSheet 2 n Q g a [mum I' I VI. NW Mi "mr mmmn' i,

U um INVENTOR Jams/7271941117! ATTORNEY$ L. KAUFMAN SEWING MACHINE} July18, 1939.

Filed March 9, 1938 3 Sheets-Sheet 3 m. mm MW WE ATTORNEYS Patented July18, 1939 UNITED STATES PATENT OFFICE snwme momma Louis Kaufman,Brooklyn, N. In Application March a, 1m, Serial No. 194,'l60

3 Claims. (01.112-144) This invention relates to a method and machinefor making the embroidery shownherein. One object of the presentinvention is to pro? 'vide a novel and improved method and means 5 formaking an embroidered product comprising a fabric having a row ofseparated and disconnected stitches showing on the face thereof. Anotherobject is to provide a novel and im proved method and means for making achain stitch in such a way that only separated and disconnected stitchesare'visible on the face of. the material.

Various other objects and advantages will be apparent as the nature ofthe invention is more fully disclosed.

Although the novel features which are believed 'Fig. 3 is an enlargedend elevation of the machine showing the needles and cooperatingmechanism;

Fig. 4 is a. detail of the feed plate showing a 7 portion of the bladefor folding and guiding the 35 fabric;

Fig. 5 is a detail showing the arrangement of the feed dogs and theassociated mechanism;

Figs. 6, 7, 8, and 9' are details showing succes'-. sive needlepositions for forming the stitch.

40 In the following description, and in the claims I certain specificterms are used for convenience in referring'to variousparts oftheinvention.

These terms, however, are to be-given as broadan interpretation asthestate ofthe art'will per- 45 mit.

The present invention may be embodied inattachment foror a modificationof"; standard,

two needle, chain stitch sewing machine made for use on straw and thevarious parts of the mecha- 5o nismwhich are incorporated in suchmachine not described herein in detail.

The machine comprises general a machine head I! carrying a presser footbar I! and a needle support I! which are actuated by 55 suitablemechanism, not shown, from a source of power such asa belt pulley 2!;The machine is also provided with a set of'pusher fingers 23 asshown inFigs. 5 to 9-which assist informing the chain stitch in the manner to bedescribed.

go V'I'heneedlesupport-ll carries apairofneedles 2| and 22 which arespaced apart bya distance corresponding to the length of the desiredvisible stitch. One of these needles, such as the needle 2|, is providedwith the usual eye 24 to receive the thread. The other needle "isprovided with 8 a book 25 which engages the thread for pulling the samedownwardly through the fabric. This machine is designed to work onstiff, heavy material such as straw and in its original form is notadapted to work'on light weight, thin, flexiblematerial such as fabric.Furthermore, it ismtended to produce a narrow stitch which ispracticallyinvisible on the surface of the straw. H

In accordance with the present invention, a feed plate 28 is providedhaving an aperture 29 through which a pair of feeddogs 30 extend. At itsforward end the aperture 29 is divided into two parts by a bridge member3| having an aperture 32 therein to receive the needles 2| and 22. Thebridge memberiil may be extended between $0 the two feed dogs 3ll-theentire length of the aperture 29 if desired. This bridge member servesas a support for the fabric and ensures the proper feeding thereof bythe feed dogs. The plate 28 is provided at its front end with adownwardly curved flange 33 which receives and .guides the fabric overthe aperture 29. l The rear 80 A presser foot 38 is attached to thepresser foot bar I! by means ofa screw 39. This presser foot 38 isprovided on its forward edge with an outwardly curved flange 40 and withan aperture 4| 7 to receive the needles. The position of the .35

presser foot is controlled by a handle 42 in the usual manner. It is tobe understood that the feed dogs are actuated by standard mechanism foradvancing the material step-by step after each stitch. 4o

. In order to feed the fabric to the needles folded to produce thedesired tucks or pleats, a blade 45 may be provided which extends to thefront of the -machine and is supported on an extensible arm which ispivoted to a bracket 41. The blade 5' may be provided with a finger 48which extends past the edge of the aperture 32 so as. to

cars 52 formed thereon. In order to adjust-the v 1 width of the tucksorpleats, the length of the arm 46 is made adjustable by means of screwsso 53 extending through elongated slots 54 formed" therein.

In order to properly gauge the spacing of the tucks, a guide 60 isprovided. This guide is attached to a. rod Bl which extends horizontallyat the front of the machine and is adjusted and secured by a set screw62. The gauge 60 extends around the edge of the blade 45 and is providedwith a downwardly directed flange 63 which is adapted to engage underthe preceding tuck for guiding the goods over the blade, 45.

The method of making the stitch is best shown in Figs. 5 to 9. It willbe noted that a thread 65 is threaded through the eye 24 in the needle2! and is pushed upwardly through the fabric 66 by said needle as shownin Fig. 6. The pusher fingers 23 then engage the thread and shift thesame laterally so that it is engaged by the hook of the needle 22 asshown in Figs. 7 and 8.

When the needles are retracted the thread is drawn downwardly by thehook 25 and forms a loop 61 below the fabric. The fabric, is newadvanced by the action of the feed dogs 30. As the fabric is advanced,this loop 61 is brought over the point of the needle 2!. The next upwardthrust of the needle 21 passes through this loop to secure the same and.form a chain stitch. 9

It will be noted that the machine above described forms a continuouschain stitch as shown in Fig. 9 on the undersideof the fabric. On theface of the fabric, however, a plurality of spaced loops 68 are formedwhich are entirely disconnected and have the appearance of embroidery.It is to be understood that the thread 65 may be of a different colorfrom the fabric 66 so as to produce a contrasting design and that boththe thread and the spacingcf the needles are so selected as to produceloops 68 which stand out in appearance with respect to the face of thefabric.

In order to make the tucks and secure the same by the above mentionedtype of chain stitch, the fabric is'first folded over the blade and isfed to the path of the needles to form a row of stitches which securethe fabric in the form of a. tuck 10. When the next tuck is to beformed, the fabric is again folded over the edge of the blade 45 insucha manner that the guide extends under the previously formed tuckinto alignment with the row of stitches securing the same. As the fabricis now advanced to the needles, a second tuck is formed with the row ofstitches spaced as above and visible. as a row the action of the feeddogs 30 and. the amount by which the fabric is fed between successiveneedle thrusts. The width of the visible stitch is determined by thespacing between the needles. The width of the tack beyond the row ofstitches is determined by the adjustment of the blade 45 and thedistance between tucks is determined by the guide 60. By properlyselecting and adjusting these elements any desired effect can beobtained.

While a particular embodiment of the invention has been shown forpurposes of illustration, it is to be understood that various changesand modifications may be made therein as will readily appear to a personskilled in the art. The invention is only to be limited in accordancewith the following claims when interpreted in view of the prior art.

What is claimed is: 1. A sewing machine for making a tucked fabricproduct in which the tucks are each secured by a single row of stitcheseach row comprising stitching extending continuously along the underface of the fabric and visible on the front face between successivetucks as a plurality of spaced disconnected double strand loops, saidmachine having a work support, stitch forming mechanism having a pair ofspaced needles including a hooked end, and an eyed needle, means beneaththe work support to carry and actuate the needles from therunder side ofthe fabric, a tucking guide blade in advance of the needles over whichthefabric is folded, a presser footto compact the fabric and hold thesame against the penetrating thrust of the needles and actuatingmechanism to ad- Vance the fabric to the needles.

2. A sewing machine for making a tucked fabric product in which thetucks are each secured of separate, disconnected stitches spaced fromthe edge of the preceding tuck.

In the embodiment shown the stitches are formed about medially betweenthe edges of successive tucks, but it is to be understood that they canbe formed at any point depending on the way the fabric is folded and thespacing between tucks. ,As shown in Figs. 8 to 9, the machine produces aproduct comprising a row of overlapping sired and the tucks may be madewith any desired spacing or maybeomitted. The spacing between thevisible stit'chesisdetermined by a single row of stitches each rowcomprising stitching extending continuously along the under h face ofthe fabric and visible on the front face between successive tucks as aplurality of spaced disconnected double strand loops, said machinehaving a work support, stitch forming mechanism having a pair of spacedneedles including a hooked and an eyed needle, means beneath the worksupport to carry and actuate the needles from the under side of thefabric, a tucking guide blade in advance of the needles over which thefabric is folded and a guide cooperating-with said blade to space thetucks, a presser foot to compact the fabric and hold the same againstthe penetrating thrust of the needles and actuating mechanism to advancethe fabric to theneedles.

3. A sewing machine for making a tucked fabric product in which thetucks are each secured by a single row of stitches each row comprisingstitching extending continuously along the under. face of the fabric andvisible on the front face between successive tucks as a pinrality ofspaced disconnected double strand loops,

said machine having a work support, stitch forming mechanism having apairof spaced needles including a hooked and an eyed needle, loopingmechanism to cooperate therewith to form chain stitching, means beneaththe work support to carry andactuate the needles from the under side

